ceph-csi/vendor/k8s.io/kubernetes/hack/lib/util.sh

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#!/usr/bin/env bash
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# Copyright 2014 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
kube::util::sortable_date() {
date "+%Y%m%d-%H%M%S"
}
kube::util::wait_for_url() {
local url=$1
local prefix=${2:-}
local wait=${3:-1}
local times=${4:-30}
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local maxtime=${5:-1}
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which curl >/dev/null || {
kube::log::usage "curl must be installed"
exit 1
}
local i
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for i in $(seq 1 "$times"); do
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local out
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if out=$(curl --max-time "$maxtime" -gkfs "$url" 2>/dev/null); then
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kube::log::status "On try ${i}, ${prefix}: ${out}"
return 0
fi
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sleep "${wait}"
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done
kube::log::error "Timed out waiting for ${prefix} to answer at ${url}; tried ${times} waiting ${wait} between each"
return 1
}
# Example: kube::util::trap_add 'echo "in trap DEBUG"' DEBUG
# See: http://stackoverflow.com/questions/3338030/multiple-bash-traps-for-the-same-signal
kube::util::trap_add() {
local trap_add_cmd
trap_add_cmd=$1
shift
for trap_add_name in "$@"; do
local existing_cmd
local new_cmd
# Grab the currently defined trap commands for this trap
existing_cmd=`trap -p "${trap_add_name}" | awk -F"'" '{print $2}'`
if [[ -z "${existing_cmd}" ]]; then
new_cmd="${trap_add_cmd}"
else
new_cmd="${trap_add_cmd};${existing_cmd}"
fi
# Assign the test
trap "${new_cmd}" "${trap_add_name}"
done
}
# Opposite of kube::util::ensure-temp-dir()
kube::util::cleanup-temp-dir() {
rm -rf "${KUBE_TEMP}"
}
# Create a temp dir that'll be deleted at the end of this bash session.
#
# Vars set:
# KUBE_TEMP
kube::util::ensure-temp-dir() {
if [[ -z ${KUBE_TEMP-} ]]; then
KUBE_TEMP=$(mktemp -d 2>/dev/null || mktemp -d -t kubernetes.XXXXXX)
kube::util::trap_add kube::util::cleanup-temp-dir EXIT
fi
}
# This figures out the host platform without relying on golang. We need this as
# we don't want a golang install to be a prerequisite to building yet we need
# this info to figure out where the final binaries are placed.
kube::util::host_platform() {
local host_os
local host_arch
case "$(uname -s)" in
Darwin)
host_os=darwin
;;
Linux)
host_os=linux
;;
*)
kube::log::error "Unsupported host OS. Must be Linux or Mac OS X."
exit 1
;;
esac
case "$(uname -m)" in
x86_64*)
host_arch=amd64
;;
i?86_64*)
host_arch=amd64
;;
amd64*)
host_arch=amd64
;;
aarch64*)
host_arch=arm64
;;
arm64*)
host_arch=arm64
;;
arm*)
host_arch=arm
;;
i?86*)
host_arch=x86
;;
s390x*)
host_arch=s390x
;;
ppc64le*)
host_arch=ppc64le
;;
*)
kube::log::error "Unsupported host arch. Must be x86_64, 386, arm, arm64, s390x or ppc64le."
exit 1
;;
esac
echo "${host_os}/${host_arch}"
}
kube::util::find-binary-for-platform() {
local -r lookfor="$1"
local -r platform="$2"
local locations=(
"${KUBE_ROOT}/_output/bin/${lookfor}"
"${KUBE_ROOT}/_output/dockerized/bin/${platform}/${lookfor}"
"${KUBE_ROOT}/_output/local/bin/${platform}/${lookfor}"
"${KUBE_ROOT}/platforms/${platform}/${lookfor}"
)
# Also search for binary in bazel build tree.
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# The bazel go rules place binaries in subtrees like
# "bazel-bin/source/path/linux_amd64_pure_stripped/binaryname", so make sure
# the platform name is matched in the path.
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locations+=($(find "${KUBE_ROOT}/bazel-bin/" -type f -executable \
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-path "*/${platform/\//_}*/${lookfor}" 2>/dev/null || true) )
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# List most recently-updated location.
local -r bin=$( (ls -t "${locations[@]}" 2>/dev/null || true) | head -1 )
echo -n "${bin}"
}
kube::util::find-binary() {
kube::util::find-binary-for-platform "$1" "$(kube::util::host_platform)"
}
# Run all known doc generators (today gendocs and genman for kubectl)
# $1 is the directory to put those generated documents
kube::util::gen-docs() {
local dest="$1"
# Find binary
gendocs=$(kube::util::find-binary "gendocs")
genkubedocs=$(kube::util::find-binary "genkubedocs")
genman=$(kube::util::find-binary "genman")
genyaml=$(kube::util::find-binary "genyaml")
genfeddocs=$(kube::util::find-binary "genfeddocs")
mkdir -p "${dest}/docs/user-guide/kubectl/"
"${gendocs}" "${dest}/docs/user-guide/kubectl/"
mkdir -p "${dest}/docs/admin/"
"${genkubedocs}" "${dest}/docs/admin/" "kube-apiserver"
"${genkubedocs}" "${dest}/docs/admin/" "kube-controller-manager"
"${genkubedocs}" "${dest}/docs/admin/" "cloud-controller-manager"
"${genkubedocs}" "${dest}/docs/admin/" "kube-proxy"
"${genkubedocs}" "${dest}/docs/admin/" "kube-scheduler"
"${genkubedocs}" "${dest}/docs/admin/" "kubelet"
"${genkubedocs}" "${dest}/docs/admin/" "kubeadm"
mkdir -p "${dest}/docs/man/man1/"
"${genman}" "${dest}/docs/man/man1/" "kube-apiserver"
"${genman}" "${dest}/docs/man/man1/" "kube-controller-manager"
"${genman}" "${dest}/docs/man/man1/" "cloud-controller-manager"
"${genman}" "${dest}/docs/man/man1/" "kube-proxy"
"${genman}" "${dest}/docs/man/man1/" "kube-scheduler"
"${genman}" "${dest}/docs/man/man1/" "kubelet"
"${genman}" "${dest}/docs/man/man1/" "kubectl"
"${genman}" "${dest}/docs/man/man1/" "kubeadm"
mkdir -p "${dest}/docs/yaml/kubectl/"
"${genyaml}" "${dest}/docs/yaml/kubectl/"
# create the list of generated files
pushd "${dest}" > /dev/null
touch docs/.generated_docs
find . -type f | cut -sd / -f 2- | LC_ALL=C sort > docs/.generated_docs
popd > /dev/null
}
# Puts a placeholder for every generated doc. This makes the link checker work.
kube::util::set-placeholder-gen-docs() {
local list_file="${KUBE_ROOT}/docs/.generated_docs"
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if [[ -e "${list_file}" ]]; then
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# remove all of the old docs; we don't want to check them in.
while read file; do
if [[ "${list_file}" != "${KUBE_ROOT}/${file}" ]]; then
cp "${KUBE_ROOT}/hack/autogenerated_placeholder.txt" "${KUBE_ROOT}/${file}"
fi
done <"${list_file}"
# The docs/.generated_docs file lists itself, so we don't need to explicitly
# delete it.
fi
}
# Removes previously generated docs-- we don't want to check them in. $KUBE_ROOT
# must be set.
kube::util::remove-gen-docs() {
if [ -e "${KUBE_ROOT}/docs/.generated_docs" ]; then
# remove all of the old docs; we don't want to check them in.
while read file; do
rm "${KUBE_ROOT}/${file}" 2>/dev/null || true
done <"${KUBE_ROOT}/docs/.generated_docs"
# The docs/.generated_docs file lists itself, so we don't need to explicitly
# delete it.
fi
}
# Takes a group/version and returns the path to its location on disk, sans
# "pkg". E.g.:
# * default behavior: extensions/v1beta1 -> apis/extensions/v1beta1
# * default behavior for only a group: experimental -> apis/experimental
# * Special handling for empty group: v1 -> api/v1, unversioned -> api/unversioned
# * Special handling for groups suffixed with ".k8s.io": foo.k8s.io/v1 -> apis/foo/v1
# * Very special handling for when both group and version are "": / -> api
kube::util::group-version-to-pkg-path() {
staging_apis=(
$(
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cd "${KUBE_ROOT}/staging/src/k8s.io/api" &&
find . -name types.go -exec dirname {} \; | sed "s|\./||g" | sort
))
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local group_version="$1"
if [[ " ${staging_apis[@]} " =~ " ${group_version/.*k8s.io/} " ]]; then
echo "vendor/k8s.io/api/${group_version/.*k8s.io/}"
return
fi
# "v1" is the API GroupVersion
if [[ "${group_version}" == "v1" ]]; then
echo "vendor/k8s.io/api/core/v1"
return
fi
# Special cases first.
# TODO(lavalamp): Simplify this by moving pkg/api/v1 and splitting pkg/api,
# moving the results to pkg/apis/api.
case "${group_version}" in
# both group and version are "", this occurs when we generate deep copies for internal objects of the legacy v1 API.
__internal)
echo "pkg/apis/core"
;;
meta/v1)
echo "vendor/k8s.io/apimachinery/pkg/apis/meta/v1"
;;
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meta/v1beta1)
echo "vendor/k8s.io/apimachinery/pkg/apis/meta/v1beta1"
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;;
*.k8s.io)
echo "pkg/apis/${group_version%.*k8s.io}"
;;
*.k8s.io/*)
echo "pkg/apis/${group_version/.*k8s.io/}"
;;
*)
echo "pkg/apis/${group_version%__internal}"
;;
esac
}
# Takes a group/version and returns the swagger-spec file name.
# default behavior: extensions/v1beta1 -> extensions_v1beta1
# special case for v1: v1 -> v1
kube::util::gv-to-swagger-name() {
local group_version="$1"
case "${group_version}" in
v1)
echo "v1"
;;
*)
echo "${group_version%/*}_${group_version#*/}"
;;
esac
}
# Fetches swagger spec from apiserver.
# Assumed vars:
# SWAGGER_API_PATH: Base path for swaggerapi on apiserver. Ex:
# http://localhost:8080/swaggerapi.
# SWAGGER_ROOT_DIR: Root dir where we want to to save the fetched spec.
# VERSIONS: Array of group versions to include in swagger spec.
kube::util::fetch-swagger-spec() {
for ver in ${VERSIONS}; do
if [[ " ${KUBE_NONSERVER_GROUP_VERSIONS} " == *" ${ver} "* ]]; then
continue
fi
# fetch the swagger spec for each group version.
if [[ ${ver} == "v1" ]]; then
SUBPATH="api"
else
SUBPATH="apis"
fi
SUBPATH="${SUBPATH}/${ver}"
SWAGGER_JSON_NAME="$(kube::util::gv-to-swagger-name ${ver}).json"
curl -w "\n" -fs "${SWAGGER_API_PATH}${SUBPATH}" > "${SWAGGER_ROOT_DIR}/${SWAGGER_JSON_NAME}"
# fetch the swagger spec for the discovery mechanism at group level.
if [[ ${ver} == "v1" ]]; then
continue
fi
SUBPATH="apis/"${ver%/*}
SWAGGER_JSON_NAME="${ver%/*}.json"
curl -w "\n" -fs "${SWAGGER_API_PATH}${SUBPATH}" > "${SWAGGER_ROOT_DIR}/${SWAGGER_JSON_NAME}"
done
# fetch swagger specs for other discovery mechanism.
curl -w "\n" -fs "${SWAGGER_API_PATH}" > "${SWAGGER_ROOT_DIR}/resourceListing.json"
curl -w "\n" -fs "${SWAGGER_API_PATH}version" > "${SWAGGER_ROOT_DIR}/version.json"
curl -w "\n" -fs "${SWAGGER_API_PATH}api" > "${SWAGGER_ROOT_DIR}/api.json"
curl -w "\n" -fs "${SWAGGER_API_PATH}apis" > "${SWAGGER_ROOT_DIR}/apis.json"
curl -w "\n" -fs "${SWAGGER_API_PATH}logs" > "${SWAGGER_ROOT_DIR}/logs.json"
}
# Returns the name of the upstream remote repository name for the local git
# repo, e.g. "upstream" or "origin".
kube::util::git_upstream_remote_name() {
git remote -v | grep fetch |\
grep -E 'github.com[/:]kubernetes/kubernetes|k8s.io/kubernetes' |\
head -n 1 | awk '{print $1}'
}
# Ensures the current directory is a git tree for doing things like restoring or
# validating godeps
kube::util::create-fake-git-tree() {
local -r target_dir=${1:-$(pwd)}
pushd "${target_dir}" >/dev/null
git init >/dev/null
git config --local user.email "nobody@k8s.io"
git config --local user.name "$0"
git add . >/dev/null
git commit -q -m "Snapshot" >/dev/null
if (( ${KUBE_VERBOSE:-5} >= 6 )); then
kube::log::status "${target_dir} is now a git tree."
fi
popd >/dev/null
}
# Checks whether godep restore was run in the current GOPATH, i.e. that all referenced repos exist
# and are checked out to the referenced rev.
kube::util::godep_restored() {
local -r godeps_json=${1:-Godeps/Godeps.json}
local -r gopath=${2:-${GOPATH%:*}}
if ! which jq &>/dev/null; then
echo "jq not found. Please install." 1>&2
return 1
fi
local root
local old_rev=""
while read path rev; do
rev=$(echo "${rev}" | sed "s/['\"]//g") # remove quotes which are around revs sometimes
if [[ "${rev}" == "${old_rev}" ]] && [[ "${path}" == "${root}"* ]]; then
# avoid checking the same git/hg root again
continue
fi
root="${path}"
while [ "${root}" != "." -a ! -d "${gopath}/src/${root}/.git" -a ! -d "${gopath}/src/${root}/.hg" ]; do
root=$(dirname "${root}")
done
if [ "${root}" == "." ]; then
echo "No checkout of ${path} found in GOPATH \"${gopath}\"." 1>&2
return 1
fi
local head
if [ -d "${gopath}/src/${root}/.git" ]; then
head="$(cd "${gopath}/src/${root}" && git rev-parse HEAD)"
else
head="$(cd "${gopath}/src/${root}" && hg parent --template '{node}')"
fi
if [ "${head}" != "${rev}" ]; then
echo "Unexpected HEAD '${head}' at ${gopath}/src/${root}, expected '${rev}'." 1>&2
return 1
fi
old_rev="${rev}"
done < <(jq '.Deps|.[]|.ImportPath + " " + .Rev' -r < "${godeps_json}")
return 0
}
# Exits script if working directory is dirty. If it's run interactively in the terminal
# the user can commit changes in a second terminal. This script will wait.
kube::util::ensure_clean_working_dir() {
while ! git diff HEAD --exit-code &>/dev/null; do
echo -e "\nUnexpected dirty working directory:\n"
if tty -s; then
git status -s
else
git diff -a # be more verbose in log files without tty
exit 1
fi | sed 's/^/ /'
echo -e "\nCommit your changes in another terminal and then continue here by pressing enter."
read
done 1>&2
}
# Ensure that the given godep version is installed and in the path. Almost
# nobody should use any version but the default.
kube::util::ensure_godep_version() {
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GODEP_VERSION=${1:-"v80"} # this version is known to work
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if [[ "$(godep version 2>/dev/null)" == *"godep ${GODEP_VERSION}"* ]]; then
return
fi
kube::log::status "Installing godep version ${GODEP_VERSION}"
go install ./vendor/github.com/tools/godep/
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if ! which godep >/dev/null 2>&1; then
kube::log::error "Can't find godep - is your GOPATH 'bin' in your PATH?"
kube::log::error " GOPATH: ${GOPATH}"
kube::log::error " PATH: ${PATH}"
return 1
fi
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if [[ "$(godep version 2>/dev/null)" != *"godep ${GODEP_VERSION}"* ]]; then
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kube::log::error "Wrong godep version - is your GOPATH 'bin' in your PATH?"
kube::log::error " expected: godep ${GODEP_VERSION}"
kube::log::error " got: $(godep version)"
kube::log::error " GOPATH: ${GOPATH}"
kube::log::error " PATH: ${PATH}"
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return 1
fi
}
# Ensure that none of the staging repos is checked out in the GOPATH because this
# easily confused godep.
kube::util::ensure_no_staging_repos_in_gopath() {
kube::util::ensure_single_dir_gopath
local error=0
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for repo_file in "${KUBE_ROOT}"/staging/src/k8s.io/*; do
if [[ ! -d "$repo_file" ]]; then
# not a directory or there were no files
continue;
fi
repo="$(basename "$repo_file")"
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if [ -e "${GOPATH}/src/k8s.io/${repo}" ]; then
echo "k8s.io/${repo} exists in GOPATH. Remove before running godep-save.sh." 1>&2
error=1
fi
done
if [ "${error}" = "1" ]; then
exit 1
fi
}
# Checks that the GOPATH is simple, i.e. consists only of one directory, not multiple.
kube::util::ensure_single_dir_gopath() {
if [[ "${GOPATH}" == *:* ]]; then
echo "GOPATH must consist of a single directory." 1>&2
exit 1
fi
}
# Checks whether there are any files matching pattern $2 changed between the
# current branch and upstream branch named by $1.
# Returns 1 (false) if there are no changes, 0 (true) if there are changes
# detected.
kube::util::has_changes_against_upstream_branch() {
local -r git_branch=$1
local -r pattern=$2
local -r not_pattern=${3:-totallyimpossiblepattern}
local full_branch
full_branch="$(kube::util::git_upstream_remote_name)/${git_branch}"
echo "Checking for '${pattern}' changes against '${full_branch}'"
# make sure the branch is valid, otherwise the check will pass erroneously.
if ! git describe "${full_branch}" >/dev/null; then
# abort!
exit 1
fi
# notice this uses ... to find the first shared ancestor
if git diff --name-only "${full_branch}...HEAD" | grep -v -E "${not_pattern}" | grep "${pattern}" > /dev/null; then
return 0
fi
# also check for pending changes
if git status --porcelain | grep -v -E "${not_pattern}" | grep "${pattern}" > /dev/null; then
echo "Detected '${pattern}' uncommitted changes."
return 0
fi
echo "No '${pattern}' changes detected."
return 1
}
kube::util::download_file() {
local -r url=$1
local -r destination_file=$2
rm ${destination_file} 2&> /dev/null || true
for i in $(seq 5)
do
if ! curl -fsSL --retry 3 --keepalive-time 2 ${url} -o ${destination_file}; then
echo "Downloading ${url} failed. $((5-i)) retries left."
sleep 1
else
echo "Downloading ${url} succeed"
return 0
fi
done
return 1
}
# Test whether openssl is installed.
# Sets:
# OPENSSL_BIN: The path to the openssl binary to use
function kube::util::test_openssl_installed {
openssl version >& /dev/null
if [ "$?" != "0" ]; then
echo "Failed to run openssl. Please ensure openssl is installed"
exit 1
fi
OPENSSL_BIN=$(command -v openssl)
}
# creates a client CA, args are sudo, dest-dir, ca-id, purpose
# purpose is dropped in after "key encipherment", you usually want
# '"client auth"'
# '"server auth"'
# '"client auth","server auth"'
function kube::util::create_signing_certkey {
local sudo=$1
local dest_dir=$2
local id=$3
local purpose=$4
# Create client ca
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${sudo} /usr/bin/env bash -e <<EOF
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rm -f "${dest_dir}/${id}-ca.crt" "${dest_dir}/${id}-ca.key"
${OPENSSL_BIN} req -x509 -sha256 -new -nodes -days 365 -newkey rsa:2048 -keyout "${dest_dir}/${id}-ca.key" -out "${dest_dir}/${id}-ca.crt" -subj "/C=xx/ST=x/L=x/O=x/OU=x/CN=ca/emailAddress=x/"
echo '{"signing":{"default":{"expiry":"43800h","usages":["signing","key encipherment",${purpose}]}}}' > "${dest_dir}/${id}-ca-config.json"
EOF
}
# signs a client certificate: args are sudo, dest-dir, CA, filename (roughly), username, groups...
function kube::util::create_client_certkey {
local sudo=$1
local dest_dir=$2
local ca=$3
local id=$4
local cn=${5:-$4}
local groups=""
local SEP=""
shift 5
while [ -n "${1:-}" ]; do
groups+="${SEP}{\"O\":\"$1\"}"
SEP=","
shift 1
done
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${sudo} /usr/bin/env bash -e <<EOF
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cd ${dest_dir}
echo '{"CN":"${cn}","names":[${groups}],"hosts":[""],"key":{"algo":"rsa","size":2048}}' | ${CFSSL_BIN} gencert -ca=${ca}.crt -ca-key=${ca}.key -config=${ca}-config.json - | ${CFSSLJSON_BIN} -bare client-${id}
mv "client-${id}-key.pem" "client-${id}.key"
mv "client-${id}.pem" "client-${id}.crt"
rm -f "client-${id}.csr"
EOF
}
# signs a serving certificate: args are sudo, dest-dir, ca, filename (roughly), subject, hosts...
function kube::util::create_serving_certkey {
local sudo=$1
local dest_dir=$2
local ca=$3
local id=$4
local cn=${5:-$4}
local hosts=""
local SEP=""
shift 5
while [ -n "${1:-}" ]; do
hosts+="${SEP}\"$1\""
SEP=","
shift 1
done
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${sudo} /usr/bin/env bash -e <<EOF
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cd ${dest_dir}
echo '{"CN":"${cn}","hosts":[${hosts}],"key":{"algo":"rsa","size":2048}}' | ${CFSSL_BIN} gencert -ca=${ca}.crt -ca-key=${ca}.key -config=${ca}-config.json - | ${CFSSLJSON_BIN} -bare serving-${id}
mv "serving-${id}-key.pem" "serving-${id}.key"
mv "serving-${id}.pem" "serving-${id}.crt"
rm -f "serving-${id}.csr"
EOF
}
# creates a self-contained kubeconfig: args are sudo, dest-dir, ca file, host, port, client id, token(optional)
function kube::util::write_client_kubeconfig {
local sudo=$1
local dest_dir=$2
local ca_file=$3
local api_host=$4
local api_port=$5
local client_id=$6
local token=${7:-}
cat <<EOF | ${sudo} tee "${dest_dir}"/${client_id}.kubeconfig > /dev/null
apiVersion: v1
kind: Config
clusters:
- cluster:
certificate-authority: ${ca_file}
server: https://${api_host}:${api_port}/
name: local-up-cluster
users:
- user:
token: ${token}
client-certificate: ${dest_dir}/client-${client_id}.crt
client-key: ${dest_dir}/client-${client_id}.key
name: local-up-cluster
contexts:
- context:
cluster: local-up-cluster
user: local-up-cluster
name: local-up-cluster
current-context: local-up-cluster
EOF
# flatten the kubeconfig files to make them self contained
username=$(whoami)
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${sudo} /usr/bin/env bash -e <<EOF
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$(kube::util::find-binary kubectl) --kubeconfig="${dest_dir}/${client_id}.kubeconfig" config view --minify --flatten > "/tmp/${client_id}.kubeconfig"
mv -f "/tmp/${client_id}.kubeconfig" "${dest_dir}/${client_id}.kubeconfig"
chown ${username} "${dest_dir}/${client_id}.kubeconfig"
EOF
}
# Determines if docker can be run, failures may simply require that the user be added to the docker group.
function kube::util::ensure_docker_daemon_connectivity {
DOCKER=(docker ${DOCKER_OPTS})
if ! "${DOCKER[@]}" info > /dev/null 2>&1 ; then
cat <<'EOF' >&2
Can't connect to 'docker' daemon. please fix and retry.
Possible causes:
- Docker Daemon not started
- Linux: confirm via your init system
- macOS w/ docker-machine: run `docker-machine ls` and `docker-machine start <name>`
- macOS w/ Docker for Mac: Check the menu bar and start the Docker application
- DOCKER_HOST hasn't been set or is set incorrectly
- Linux: domain socket is used, DOCKER_* should be unset. In Bash run `unset ${!DOCKER_*}`
- macOS w/ docker-machine: run `eval "$(docker-machine env <name>)"`
- macOS w/ Docker for Mac: domain socket is used, DOCKER_* should be unset. In Bash run `unset ${!DOCKER_*}`
- Other things to check:
- Linux: User isn't in 'docker' group. Add and relogin.
- Something like 'sudo usermod -a -G docker ${USER}'
- RHEL7 bug and workaround: https://bugzilla.redhat.com/show_bug.cgi?id=1119282#c8
EOF
return 1
fi
}
# Wait for background jobs to finish. Return with
# an error status if any of the jobs failed.
kube::util::wait-for-jobs() {
local fail=0
local job
for job in $(jobs -p); do
wait "${job}" || fail=$((fail + 1))
done
return ${fail}
}
# kube::util::join <delim> <list...>
# Concatenates the list elements with the delimiter passed as first parameter
#
# Ex: kube::util::join , a b c
# -> a,b,c
function kube::util::join {
local IFS="$1"
shift
echo "$*"
}
# Downloads cfssl/cfssljson into $1 directory if they do not already exist in PATH
#
# Assumed vars:
# $1 (cfssl directory) (optional)
#
# Sets:
# CFSSL_BIN: The path of the installed cfssl binary
# CFSSLJSON_BIN: The path of the installed cfssljson binary
#
function kube::util::ensure-cfssl {
if command -v cfssl &>/dev/null && command -v cfssljson &>/dev/null; then
CFSSL_BIN=$(command -v cfssl)
CFSSLJSON_BIN=$(command -v cfssljson)
return 0
fi
# Create a temp dir for cfssl if no directory was given
local cfssldir=${1:-}
if [[ -z "${cfssldir}" ]]; then
kube::util::ensure-temp-dir
cfssldir="${KUBE_TEMP}/cfssl"
fi
mkdir -p "${cfssldir}"
pushd "${cfssldir}" > /dev/null
echo "Unable to successfully run 'cfssl' from $PATH; downloading instead..."
kernel=$(uname -s)
case "${kernel}" in
Linux)
curl --retry 10 -L -o cfssl https://pkg.cfssl.org/R1.2/cfssl_linux-amd64
curl --retry 10 -L -o cfssljson https://pkg.cfssl.org/R1.2/cfssljson_linux-amd64
;;
Darwin)
curl --retry 10 -L -o cfssl https://pkg.cfssl.org/R1.2/cfssl_darwin-amd64
curl --retry 10 -L -o cfssljson https://pkg.cfssl.org/R1.2/cfssljson_darwin-amd64
;;
*)
echo "Unknown, unsupported platform: ${kernel}." >&2
echo "Supported platforms: Linux, Darwin." >&2
exit 2
esac
chmod +x cfssl || true
chmod +x cfssljson || true
CFSSL_BIN="${cfssldir}/cfssl"
CFSSLJSON_BIN="${cfssldir}/cfssljson"
if [[ ! -x ${CFSSL_BIN} || ! -x ${CFSSLJSON_BIN} ]]; then
echo "Failed to download 'cfssl'. Please install cfssl and cfssljson and verify they are in \$PATH."
echo "Hint: export PATH=\$PATH:\$GOPATH/bin; go get -u github.com/cloudflare/cfssl/cmd/..."
exit 1
fi
popd > /dev/null
}
# kube::util::ensure_dockerized
# Confirms that the script is being run inside a kube-build image
#
function kube::util::ensure_dockerized {
if [[ -f /kube-build-image ]]; then
return 0
else
echo "ERROR: This script is designed to be run inside a kube-build container"
exit 1
fi
}
# kube::util::ensure-gnu-sed
# Determines which sed binary is gnu-sed on linux/darwin
#
# Sets:
# SED: The name of the gnu-sed binary
#
function kube::util::ensure-gnu-sed {
if LANG=C sed --help 2>&1 | grep -q GNU; then
SED="sed"
elif which gsed &>/dev/null; then
SED="gsed"
else
kube::log::error "Failed to find GNU sed as sed or gsed. If you are on Mac: brew install gnu-sed." >&2
return 1
fi
}
# Some useful colors.
if [[ -z "${color_start-}" ]]; then
declare -r color_start="\033["
declare -r color_red="${color_start}0;31m"
declare -r color_yellow="${color_start}0;33m"
declare -r color_green="${color_start}0;32m"
declare -r color_norm="${color_start}0m"
fi
# ex: ts=2 sw=2 et filetype=sh